Relaxed Beam Failure Detection for Low Mobility Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in performing beam failure detection (BFD) procedures, particularly in scenarios with low mobility or stationary users, leading to increased power consumption and potential communication disruptions.
Innovation Solution
Implementing a relaxed BFD procedure that adjusts based on specific conditions such as RSRP thresholds and mobility states, allowing for reduced BFD frequency and power usage, and triggering beam failure recovery (BFR) with optimized RACH resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a normal BFD procedure is performed continuously, then beam failure detection reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic adjustment of BFD procedure based on mobility state. When the UE is in a low mobility state (determined by comparing mobility indicator against threshold), the BFD procedure is relaxed or temporarily stopped. When the UE transitions to high mobility state, the normal BFD procedure is restored. This dynamic adaptation resolves the contradiction by matching BFD intensity to actual mobility conditions.
Solution Approach 2:
The patent changes the BFD procedure parameters based on mobility state. In low mobility state, the system switches from normal BFD (with regular RS measurement and evaluation) to relaxed BFD (with reduced measurement frequency) or temporary suspension. This parameter change resolves the contradiction by reducing power consumption during periods when beam failures are less likely to occur.
2Measurement precision
If a normal BFD procedure is performed continuously, then beam management accuracy is improved, but communication efficiency deteriorates
Solution Approach 1:
The system dynamically adjusts BFD procedure based on mobility state. In low mobility state, relaxed BFD or temporary suspension is applied, reducing measurement overhead and improving communication efficiency. In high mobility state, normal BFD is applied to maintain beam management accuracy. This dynamic approach resolves the contradiction between measurement precision and communication efficiency.
Solution Approach 2:
The patent changes BFD procedure parameters based on mobility conditions. When mobility indicator is below threshold, the system switches to relaxed BFD with reduced RS measurement frequency and relaxed evaluation criteria. This parameter change reduces unnecessary measurements, improving communication efficiency while maintaining sufficient beam management accuracy for low mobility scenarios.
3Use of energy by moving object
If a relaxed BFD procedure is performed, then power consumption is reduced, but beam failure detection reliability may deteriorate
Solution Approach 1:
The patent applies different BFD procedure qualities to different mobility states. For low mobility state (local condition), relaxed BFD with reduced power consumption is applied. For high mobility state (different local condition), normal BFD with higher reliability is restored. This local quality adaptation resolves the contradiction by matching detection reliability to actual mobility conditions.
Solution Approach 2:
The system performs preliminary assessment of mobility state before determining BFD procedure intensity. By evaluating the mobility indicator in advance, the system prevents unnecessary normal BFD operations in low mobility states, thereby preventing excessive power consumption while maintaining sufficient reliability through condition-appropriate procedures.
4Use of energy by moving object
If BFD procedure is temporarily stopped, then power consumption is reduced, but beam management capability may deteriorate
Solution Approach 1:
The system implements dynamic suspension and resumption of BFD procedure based on mobility state transitions. When UE enters low mobility state, BFD is temporarily stopped to save power. When UE transitions to high mobility state, BFD is resumed to restore full beam management capability. This dynamic approach resolves the contradiction between power savings and capability maintenance.
Solution Approach 2:
The system performs preliminary evaluation of mobility state to determine whether to suspend or continue BFD procedure. This preliminary action prevents unnecessary BFD operations during low mobility periods, saving power, while ensuring BFD is maintained during high mobility periods when beam management capability is critical.
Data Source
AI summary
Various embodiments relate to a next-generation wireless communication system for supporting higher data transmission rate, beyond a 4th generation (4G) wireless communication system. According to various embodiments, a method of transmitting and receiving a signal in a wireless communication system and an apparatus supporting the same may be provided, and other various embodiments may be provided.